Convert Win 7 MBR installation to GPT installation

Discussion in 'Windows 7' started by John Peterson, May 8, 2012.

  1. John Peterson

    John Peterson MDL Novice

    Dec 26, 2009
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    #1 John Peterson, May 8, 2012
    Last edited: Jul 4, 2013
  2. redroad

    redroad MDL Guru

    Dec 2, 2011
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    Nice work John Peterson .. For clarity you are using a Linux distro or G-Parted?

    Also if you could share your backup scenario with GPT disks would be an added bonus to your thread
     
  3. John Peterson

    John Peterson MDL Novice

    Dec 26, 2009
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    #3 John Peterson, May 26, 2012
    Last edited: May 26, 2012
    (OP)
    Thanks!

    This is from a Debian/Ubuntu live boot.

    The same as with MBR disks.

    I do a "sudo dd if=/dev/sda of=/mnt/sdb/sda.image" copy of the MBR disk (to be converted to a GPT disk) to an external USB disk from a Debian/Ubuntu live boot. In VMware I do a "sudo dd if=/mnt/sdb/sda.image of=/dev/sdc" with the image and test the operation on sdc in VMware.

    For safety I also make a copy from an Acronis boot disk (if there would be a problem with the dd image) to an external USB disk, and a "robocopy C:\ D:\c.image /mir /r:0 /xj" of all files while in Windows with C: as system disk (if both images would fail then at least the files are there, except the system files that robocopy can't copy).
     
  4. murphy78

    murphy78 MDL DISM Enthusiast

    Nov 18, 2012
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    There's a much easier method for this on Win7.

    Boot to win7 dvd.
    Shift-f10 for console

    Diskpart
    List Disk
    Select Disk 1 (or whatever your main disk is)
    clean
    convert gpt
    exit
    exit

    Then install to the unpartitioned drive.
     
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  5. Tito

    Tito Super Mod / Adviser
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    Nov 30, 2009
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    #6 Tito, May 30, 2013
    Last edited: May 30, 2013
    The whole topic is based on how to convert an existing Windows BIOS/MBR installation to UEFI.
     
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